Synthesis of palladacycles employing iminoisoindolines as monoanionic bidentate ligands
作者:Jackson M. Chitanda、Demyan E. Prokopchuk、J. Wilson Quail、Stephen R. Foley
DOI:10.1039/b806544f
日期:——
A series of air- and moisture-stable iminoisoindoline-based palladacycles have been prepared in two operationally simple stepsfrom commercially available reagents. para-Substituted N,N'-diphenyliminoisoindoline ligands are easily synthesized from phthalaldehyde and para-substituted anilines and further reaction of the iminoisoindoline ligands with Pd(OAc)(2) in dichloromethane at room temperature
using one- and two-dimensional 1H and 13C NMR, IR, MS and UV/Vis spectroscopy. The crystal and molecular structures of 7, 8 and 9 were determined by X-ray diffraction on single crystals. In all three molecules the isoindoline system and its N-substituent are approximately coplanar. The crystal structures comprise of discrete molecules linked only by weak C–H⋯N interactions in the case of 8 and 9. NMR analysis